Cosmetic transparent gel preparation and gelling agent

ABSTRACT

A cosmetic transparent gel preparation that has high levels of transparency and hardness and favorable usability, as well as a gelling agent that is ideal for use in the cosmetic transparent gel preparation. The cosmetic transparent gel preparation contains an esterification reaction product obtained by reacting glycerol with a dibasic acid of 18 to 28 carbon atoms and a fatty acid of 8 to 28 carbon atoms (excluding dibasic acids), 12-hydroxystearic acid, and an oil component. The gelling agent contains an esterification reaction product obtained by reacting glycerol with a dibasic acid of 18 to 28 carbon atoms and a fatty acid of 8 to 28 carbon atoms (excluding dibasic acids), and 12-hydroxystearic acid.

TECHNICAL FIELD

The present invention relates to a cosmetic transparent gel preparationthat exhibits excellent transparency and hardness and extremelyfavorable usability, and also relates to a gelling agent that is idealfor use in the cosmetic transparent gel preparation.

Priority is claimed on Japanese Patent Application No. 2008-235068,filed Sep. 12, 2008, the content of which is incorporated herein byreference.

BACKGROUND ART

Oil-based transparent cosmetic preparations mainly offer advantages suchas a beautiful external appearance and a transparent-like finish whenapplied. A large variety of bases have been investigated for suchpreparations, and of these, numerous investigations have been conductedof bases containing 12-hydroxystearic acid.

For example, a transparent cosmetic preparation containing12-hydroxystearic acid, a cellulose derivative and an oil component (seePatent Document 1), and a transparent cosmetic preparation containing12-hydroxystearic acid, a dextrin fatty acid ester and an oil component(see Patent Document 2) have previously been disclosed. Thesepreparations are claimed to address usage problems and transparencyproblems associated with conventional transparent cosmetic preparationssuch as poor spreadability, a tendency to come off during application,an unsatisfactory finish following application, and a deterioration inthe transparency over time.

On the other hand, transparent cosmetic preparations frequently containa gelling agent for the oil-based component, and examples of gellingagents that have already been disclosed include compositionscorresponding with esterification reaction products obtained by reactingglycerol with a dibasic acid of 18 to 28 carbon atoms and a fatty acidof 8 to 28 carbon atoms (see Patent Documents 3 and 4).

PRIOR ART DOCUMENTS Patent Documents

[Patent Document 1]

Japanese Laid-Open Patent Application No. 2000-204016

[Patent Document 2]

Japanese Laid-Open Patent Application No. 2001-39817

[Patent Document 3]

Japanese Laid-Open Patent Application No. Hei 07-126604

[Patent Document 4]

Japanese Laid-Open Patent Application No. 2008-31102

DISCLOSURE OF INVENTION Problems to be Solved by the Invention

However, with the transparent cosmetic preparations disclosed in PatentDocuments 1 and 2, a problem has existed in that when the cellulosederivative or dextrin fatty acid ester is added to the 12-hydroxystearicacid, the mixture must be heated at a high temperature of 95° C. orhigher to achieve dissolution, which can have an adverse effect on thequality of the transparent cosmetic preparation. In particular, becausean accurate temperature setting cannot be achieved with a water bath,heating with steam or a heater has been necessary, but these heatingmethods increase the likelihood of localized heating, increasing thechances of adverse effects on the quality of the oil-based component.Moreover, the transparent cosmetic preparations disclosed in PatentDocuments 1 and 2 both suffer from low levels of hardness.

Further, even if the gelling agent disclosed in Patent Document 3 isadded to an oil component, a transparent preparation is not obtained,whereas when the gelling agent disclosed in Patent Document 4 is addedto an oil component, although transparency is achieved, the hardnesslevel is low. Accordingly, with either gelling agent, obtaining acosmetic transparent gel preparation having high levels of transparencyand hardness and favorable usability has proven impossible.

The present invention takes the above circumstances into consideration,with an object of providing a cosmetic transparent gel preparation thathas high levels of transparency and hardness and favorable usability, aswell as a gelling agent that is ideal for use in the cosmetictransparent gel preparation.

Means to Solve the Problems

As a result of intensive research aimed at achieving the above object,the inventors of the present invention discovered that, totallyunexpectedly, a cosmetic preparation containing an esterificationreaction product obtained by reacting glycerol with a dibasic acid of 18to 28 carbon atoms and a fatty acid of 8 to 28 carbon atoms, incombination with 12-hydroxystearic acid and an oil component was able toachieve the above object, and they were therefore able to complete thepresent invention.

In other words, in order to achieve the object described above,

the present invention provides a cosmetic transparent gel preparationcontaining an esterification reaction product obtained by reactingglycerol with a dibasic acid of 18 to 28 carbon atoms and a fatty acidof 8 to 28 carbon atoms (excluding dibasic acids), 12-hydroxystearicacid and an oil component.

The cosmetic transparent gel preparation of the present inventionpreferably contains 4 to 20% by mass of the 12-hydroxystearic acid and 1to 15% by mass of the esterification reaction product.

Further, in the cosmetic transparent gel preparation of the presentinvention, the mass ratio between the 12-hydroxystearic acid and theesterification reaction product is preferably within a range from 20:1to 1:2.

Furthermore, the cosmetic transparent gel preparation of the presentinvention preferably contains, as the oil component, not less than 20%by mass of an ester oil that has a hydroxyl value of 40 to 300 and is aliquid at normal temperature.

The present invention also provides a gelling agent containing anesterification reaction product obtained by reacting glycerol with adibasic acid of 18 to 28 carbon atoms and a fatty acid of 8 to 28 carbonatoms (excluding dibasic acids), and 12-hydroxystearic acid.

The present invention also provides a cosmetic transparent gelpreparation containing the gelling agent of the present invention and anoil component.

Effect of the Invention

The present invention is able to provide a cosmetic transparent gelpreparation that has high levels of transparency and hardness, andfavorable usability.

BEST MODE FOR CARRYING OUT THE INVENTION

A more detailed description of the present invention is presented below.

A cosmetic transparent gel preparation of the present invention containsan esterification reaction product obtained by reacting glycerol, adibasic acid of 18 to 28 carbon atoms and a fatty acid of 8 to 28 carbonatoms (excluding dibasic acids), 12-hydroxystearic acid, and an oilcomponent.

As mentioned above, a transparent cosmetic preparation disclosed inJapanese Laid-Open Patent Application No. 2000-204016 contains12-hydroxystearic acid, a cellulose derivative and an oil component, anda transparent cosmetic preparation disclosed in Japanese Laid-OpenPatent Application No. 2001-39817 contains 12-hydroxystearic acid, adextrin fatty acid ester and an oil component, but both of thesepreparations have low levels of hardness. Furthermore, the gelling agentdisclosed in Japanese Laid-Open Patent Application No. 2008-31102contains an esterification reaction product obtained by reactingglycerol, a dibasic acid of 18 to 28 carbon atoms and a fatty acid of 8to 28 carbon atoms, but even if this gelling agent is blended with anoil component, the resulting preparation has a low level of hardness.Accordingly, even if the esterification reaction product containedwithin the above gelling agent were to be used instead of the cellulosederivative or dextrin fatty acid ester in the transparent cosmeticpreparations described above, thereby forming a similar configuration tothe cosmetic transparent gel preparation of the present invention, itwould not normally be thought that the hardness of the resultingtransparent cosmetic preparation would increase. Furthermore, when asimilar gelling agent disclosed in Japanese Laid-Open Patent ApplicationNo. Hei 07-126604 is blended with an oil component, the resultingblended mixture is not transparent, and therefore even if theesterification reaction product contained within the above gelling agentwere to be used instead of the cellulose derivative or dextrin fattyacid ester in the transparent cosmetic preparations described above, itis difficult to imagine that the resulting cosmetic preparation would betransparent.

However, against all such expectations, the cosmetic transparent gelpreparation of the present invention unexpectedly exhibited high levelsof transparency and hardness, as well as favorable usability.

The components used in the present invention are described below indetail.

The 12-hydroxystearic acid may be a commercially available material, ormay be chemically synthesized. Further, 12-hydroxystearic acid obtainedby performing a chemical treatment on a specific raw material may alsobe used, and examples of such materials include a material obtained byhydrogenating ricinoleic acid, and a material obtained by hydrolyzinghydrogenated castor oil.

The amount added of the 12-hydroxystearic acid may be adjustedappropriately in accordance with factors such as the intended use of thetarget cosmetic transparent gel preparation, but usually, is preferablywithin a range from 4 to 20% by mass, more preferably from 6 to 19% bymass, and still more preferably from 7 to 12% by mass, relative to thetotal mass of all the components.

The dibasic acid of 18 to 28 carbon atoms is preferably a linear orbranched chain, and is preferably a saturated dibasic acid. Specificexamples include dicarboxylic acids of 18 to 28 carbon atoms. Of these,dibasic acids of 18 to 20 carbon atoms are preferred, includingoctadecanedioic acid, nonadecanedioic acid and eicosanedioic acid.

Further, the dibasic acid of 18 to 28 carbon atoms may be either asingle compound or a mixture of two or more compounds. In the case of amixture of two or more compounds, the combination used and the ratiobetween the compounds may be selected appropriately in accordance withthe intended purpose.

The fatty acid of 8 to 28 carbon atoms is a fatty acid that is not adibasic acid, may be either a linear or branched chain, preferablycontains from 8 to 22 carbon atoms, and most preferably contains 22carbon atoms. A saturated fatty acid is preferred. Specific examplesinclude caprylic acid, capric acid, lauric acid, myristic acid, palmiticacid, stearic acid, behenic acid, oleic acid, ricinoleic acid,palmitoleic acid, isooctanoic acid (such as 2-ethylhexanoic acid),isononanoic acid (such as 3,5,5-trimethylhexanoic acid), isopalmiticacid, isostearic acid (such as 2-heptylundecanoic acid and multimethylbranched isostearic acid manufactured by Emery Oleochemicals Group),isoeicosanoic acid, cerotic acid, montanic acid, melissic acid, and thelike. Of these, from the viewpoint of achieving a favorable gellingcapability relative to the oil component, behenic acid is particularlypreferred.

Furthermore, the fatty acid of 8 to 28 carbon atoms may be either asingle compound or a mixture of two or more compounds. In the case of amixture of two or more compounds, the combination used and the ratiobetween the compounds may be selected appropriately in accordance withthe intended purpose.

The esterification reaction product in the present invention has ahydroxyl value that is preferably not more than 40, more preferably notmore than 35, and still more preferably 30 or less. Provided thehydroxyl value of the esterification reaction product satisfies theabove range, the transparent sensation and gel-forming ability of thegelling agent can both be further improved. In this description, the“hydroxyl value” refers to the value obtained using the hydroxyl valuemeasurement method prescribed in the general test methods of theJapanese Standards for Cosmetic Ingredients.

The esterification reaction product used in the present invention may bea commercially available product, or may be chemically synthesized.

Examples of preferred commercially available products include glyceryl(behenate/isostearate/eicosanedioate) (product name: NOMCORT SG,manufactured by Nisshin Oillio Group) and glyceryl(behenate/eicosanedioate) (product name: NOMCORT HK-G, manufactured byNisshin Oillio Group).

In those cases where the esterification reaction product is chemicallysynthesized, a product obtained by using a conventional method toperform an esterification reaction using the desired dibasic acid of 18to 28 carbon atoms, fatty acid of 8 to 28 carbon atoms (excludingdibasic acids) and glycerol as raw materials may be used.

The amount added of the esterification reaction product in the presentinvention may be adjusted appropriately in accordance with factors suchas the intended use of the target cosmetic transparent gel preparation,but usually, is preferably within a range from 1 to 15% by mass, andmore preferably from 1 to 12% by mass, relative to the total mass of allthe components.

Further, the esterification reaction product may be either a singleproduct or a mixture of two or more products. In the case of a mixtureof two or more products, the combination used and the ratio between theproducts may be selected appropriately in accordance with the intendedpurpose.

The mass ratio between the 12-hydroxystearic acid and the esterificationreaction product of the present invention (namely the mass ratio of12-hydroxystearic acid: esterification reaction product of the presentinvention) is preferably within a range from 20:1 to 1:2, morepreferably from 10:1 to 1:1, still more preferably from 5:1 to 1:1, andstill more preferably from 5:1 to 2:1.

There are no particular limitations on the oil component, providedaddition of the oil component yields a transparent cosmetic preparation,and any of the types of oil components used in typical cosmeticpreparations may be used. Examples include liquid oils and fats, solidoils and fats, waxes, hydrocarbon oils, higher fatty acids, higheralcohols, synthetic ester oils, natural ester oils and silicone oils.More specific examples are listed below.

Examples of the liquid oils and fats include avocado oil, camellia oil,turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseedoil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil,castor oil, linseed oil, safflower oil, cotton seed oil, perilla oil,soybean oil, peanut oil, tea seed oil, Japanese nutmeg oil, rice germoil, tung oil, Japanese tung oil, jojoba oil, germ oil, triglycerol,glycerol trioctanoate, glycerol triisopalmitate and the like.

Examples of the solid oils and fats include cacao fat, coconut oil,horse tallow, hardened coconut oil, palm oil, beef tallow, sheep tallow,hardened beef tallow, palm kernel oil, lard, beef bone tallow, Japankernel oil, hardened oil, beef leg tallow, Japan wax, hardened castoroil and the like.

Examples of the waxes include beeswax, candelilla wax, cotton wax,carnauba wax, bayberry wax, Ericerus Pela wax, spermaceti, montan wax,bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, isopropyl lanolate, hexyl laurate, reduced lanolin, jojobawax, hardened lanolin, shellac wax, POE lanolin alcohol ether, POElanolin alcohol acetate, POE cholesterol ether, polyethylene glycollanolate, POE hydrogenated lanolin alcohol ether and the like.

Examples of the hydrocarbon oils include liquid paraffin, isoparaffin,ozokerite, squalane, pristane, ceresin, squalene, Vaseline,microcrystalline wax, paraffin wax, α-olefin oligomers and the like.

Examples of the higher fatty acids include lauric acid, myristic acid,palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid,tall oil acid, isostearic acid, linoleic acid, linolenic acid,eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and the like.

Examples of the higher alcohols include linear alcohols such as laurylalcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristylalcohol, oleyl alcohol and cetostearyl alcohol, and branched alcoholssuch as glycerol monostearyl ether (batyl alcohol), 2-decyltetradecinol,lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearylalcohol and octyldodecanol.

Examples of the synthetic ester oils include isopropyl myristate, cetyloctanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate,hexyl laurate, myristyl myristate, decyl oleate, hexyldecyldimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate,isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate,ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester,N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearylmalate, glycerol di-2-heptylundecanoate, trimethylolpropanetri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythritoltetra-2-ethylhexanoate, glycerol tri-2-ethylhexanoate,trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexylpalmitate, glycerol trimyristate, glyceride tri-2-heptylundecanoate,castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride,2-heptylundecyl palmitate, diisobutyl adipate, 2-octyldodecylN-lauroyl-L-glutamate, di-2-heptylundecyl adipate, ethyl laurate,di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecylpalmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexylsuccinate, ethyl acetate, butyl acetate, triethyl citrate, glyceroltrioctanoate, glycerol triisopalmitate, diglyceryl isostearate,diglyceryl diisostearate, diglyceryl triisostearate, (isostearicacid/sebacic acid) ditrimethylolpropane oligoester, ditrimethylolpropanetriethylhexanoate, erythrityl triethylhexanoate, pentaerythrityltetraisostearate and the like.

Examples of the natural ester oils include avocado oil, camellia oil,turtle oil, macadamia nut oil, corn oil, sunflower oil, mink oil, oliveoil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil,sasanqua oil, castor oil, linseed oil, safflower oil, grapeseed oil,cotton seed oil, perilla oil, soybean oil, peanut oil, tea seed oil,Japanese nutmeg oil, rice germ oil, tung oil, Japanese tung oil, jojobaoil, germ oil, evening primrose oil and the like.

Examples of the silicone oils include chain-like polysiloxanes such asdimethylpolysiloxane, methylphenylpolysiloxane andmethylhydrogenpolysiloxane, cyclic polysiloxanes such asoctamethylcyclotetrasiloxane, decamethylcyclopentasiloxane,dodecamethylcyclohexasiloxane andtetrahydrotetramethylcyclotetrasiloxane, and polyoxyethylenepolyalkylsiloxanes.

As the oil component, among the components listed above, an ester oilwhich contains hydroxyl groups, has a hydroxyl value of 40 to 300, andis a liquid at normal temperature is particularly preferred. Further, anoil component having a hydroxyl value of 40 to 100 is more preferred,and an oil component having a hydroxyl value of 40 to 90 is particularlydesirable.

Examples of preferred ester oils which have a hydroxyl value of 40 to300 and are liquid at normal temperature include diisostearyl malate,diglyceryl isostearate, diglyceryl diisostearate, diglyceryltriisostearate, (isostearic acid/sebacic acid) ditrimethylolpropaneoligoester, ditrimethylolpropane triethylhexanoate, erythrityltriethylhexanoate, castor oil and the like.

The added oil component may be either a single component or a mixture oftwo or more components. In the case of a mixture of two or morecomponents, the combination used and the ratio between the componentsmay be selected appropriately in accordance with the intended purpose.Specific examples of preferred mixtures include combinations of an esteroil and a silicone oil, and a combination of an above-mentioned esteroil which has a hydroxyl value of 40 to 300 and is a liquid at normaltemperature, and a silicone oil composed of a chain-like polysiloxane isparticularly preferred.

The amount added of the oil component may be adjusted appropriately inaccordance with factors such as the intended use of the target cosmetictransparent gel preparation.

By including an ester oil which has a hydroxyl value of 40 to 300 and isliquid at normal temperature in an amount that is preferably not lessthan 20% by mass, more preferably not less than 30% by mass, and stillmore preferably within a range from 40 to 60% by mass, the cosmetictransparent gel preparation of the present invention is able to exhibitparticularly superior effects.

If required, the cosmetic transparent gel preparation of the presentinvention may also include other components besides the essentialcomponents described above, provided these other components do notimpair the effects of the present invention, and examples of these othercomponents include humectants, preservatives, antioxidants, ultravioletabsorbers, macromolecules, surfactants, powders, pigments, dyes,alcohols, medicinal agents, solvents, fragrances and the like.

The term “gelling agent” generally refers to a component that, whenmixed with a liquid oil, causes gelling and solidification.

The gelling agent of the present invention contains the esterificationreaction product according to the present invention, namely theesterification reaction product obtained by reacting glycerol with adibasic acid of 18 to 28 carbon atoms and a fatty acid of 8 to 28 carbonatoms (excluding dibasic acids), together with 12-hydroxystearic acid.

By mixing the gelling agent of the present invention with the oilcomponent described above, a cosmetic transparent gel preparation havinghigh levels of transparency and hardness and favorable usability can beproduced.

As mentioned above, the mass ratio between the components of the gellingagent of the present invention, namely the 12-hydroxystearic acid andthe esterification reaction product of the present invention (namely,the mass ratio of 12-hydroxystearic acid: esterification reactionproduct of the present invention), is preferably within a range from20:1 to 1:2, more preferably from 10:1 to 1:1, still more preferablyfrom 5:1 to 1:1, and still more preferably from 5:1 to 2:1.

Examples of the humectants include polyethylene glycol, propyleneglycol, glycerol, 1,3-butylene glycol, xylitol, sorbitol, maltitol,chondroitin sulfuric acid, hyaluronic acid, mucoitin sulfuric acid,charonin sulfuric acid, atelocollagen, cholesteryl 12-hydroxystearate,sodium lactate, urea, salts of bile acid, salts ofdl-pyrrolidonecarboxylic acid, short-chain soluble collagen, diglycerol(EO) PO adducts, extract of chestnut rose, extract of yarrow, extract ofmelilot and the like.

Examples of the preservatives include ethylparaben, butylparaben and thelike.

Examples of the antioxidants include phosphoric acid, citric acid,ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid,cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraaceticacid and the like.

Examples of the ultraviolet absorbers include benzoic acid-basedultraviolet absorbers such as para-aminobenzoic acid (hereinafterabbreviated as PABA), glycerol mono PABA ester, N,N-dipropoxy PABA ethylester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, andN,N-dimethyl PABA butyl ester, anthranilic acid-based ultravioletabsorbers such as homomethyl N-acetylanthranilate, salicylic acid-basedultraviolet absorbers such as amyl salicylate, menthyl salicylate,homomethyl salicylate, octyl salicylate, phenyl salicylate, benzylsalicylate and p-isopropanolphenyl salicylate, cinnamic acid-basedultraviolet absorbers such as octyl cinnamate, ethyl4-isopropylcinnamate, methyl 2,5-diisopropylcinnamate, ethyl2,4-diisopropylcinnamate, methyl 2,4-diisopropylcinnamate, propylp-methoxycinnamate, isopropyl p-methoxycinnamate, isoamylp-methoxycinnamate, octyl p-methoxycinnamate (2-ethylhexylp-methoxycinnamate), 2-ethoxyethyl p-methoxycinnamate, cyclohexylp-methoxycinnamate, ethyl α-cyano-β-phenylcinnamate, 2-ethylhexylα-cyano-β-phenylcinnamate and glycerylmono-2-ethylhexanoyl-diparamethoxycinnamate, benzophenone-basedultraviolet absorbers such as 2,4-dihydroxybenzophenone,2,2′-dihydroxy-4-methoxybenzophenone,2,2′-dihydroxy-4,4′-dimethoxybenzophenone,2,2′,4,4′-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone,2-hydroxy-4-methoxy-4′-methylbenzophenone, salts of2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 4-phenylbenzophenone,2-ethylhexyl 4′-phenylbenzophenone-2-carboxylate,2-hydroxy-4-n-octoxybenzophenone and 4-hydroxy-3-carboxybenzophenone, aswell as 3-(4′-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor,urocanic acid, ethyl urocanate, 2-phenyl-5-methylbenzoxazole,2,2′-hydroxy-5-methylphenylbenzotriazole,2-(2′-hydroxy-5′-t-octylphenyl)benzotriazole,2-(2′-hydroxy-5′-methylphenyl)benzotriazole, dibenzalazine,dianisoylmethane, 4-methoxy-4′-t-butyldibenzoylmethane,5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one,2,4,6-trianilino-p-(carbo-2′-ethylhexyl-1′-oxy)-1,3,5-triazine and thelike.

Examples of the macromolecules include naturally occurring water-solublemacromolecules, semi-synthetic water-soluble macromolecules, syntheticwater-soluble macromolecules, inorganic water-soluble macromolecules andthe like.

Specific examples of the naturally occurring water-solublemacromolecules include plant-based macromolecules such as gum arabic,tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenin,locust bean gum, tamarind gum, pectin, agar, quince seed (cydoniaoblonga), algae colloid (algae extract) and starch (from rice, corn,potato and wheat), microbial macromolecules such as xanthan gum,dextran, succinoglucan and pullulan, and animal-based macromoleculessuch as collagen, casein, albumin and gelatin.

Further, specific examples of the semi-synthetic water-solublemacromolecules include starch-based macromolecules such as carboxymethylstarch and methylhydroxypropyl starch, cellulose-based macromoleculessuch as methylcellulose, nitrocellulose, methylhydroxypropylcellulose,sodium cellulose sulfate, hydroxypropylcellulose,carboxymethylcellulose, sodium carboxymethylcellulose, crystallinecellulose and cellulose powder, and alginic acid-based macromoleculessuch as sodium alginate and propylene glycol alginate.

Furthermore, specific examples of the synthetic water-solublemacromolecules include vinyl-based macromolecules such as polyvinylalcohol, polyvinyl methyl ether, polyvinylpyrrolidone and carboxyvinylpolymers (carbopol), polyoxyethylene-based macromolecules such aspolyethylene glycols 20,000, 40,000 and 60,000,polyoxyethylene-polyoxypropylene copolymer-based macromolecules,acrylic-based macromolecules such as sodium polyacrylate, polyethylacrylate and polyacrylamide, polyethyleneimine and cationic polymers.

Furthermore, specific examples of the inorganic water-solublemacromolecules include bentonite, AlMg silicate (veegum), laponite,hectorite, silicic acid anhydride and the like.

Examples of the surfactants include synthetic surfactants or naturallyoccurring surfactants such as anionic surfactants, cationic surfactants,amphoteric surfactants, lipophilic nonionic surfactants and hydrophilicnonionic surfactants.

Specific examples of the anionic surfactants include fatty acid soapssuch as soap bases, sodium laurate and sodium palmitate; salts of higheralkyl sulfate esters such as sodium lauryl sulfate and potassium laurylsulfate; salts of alkyl ether sulfate esters such as the triethanolaminesalt of POE lauryl sulfate and sodium POE lauryl sulfate;N-acylsarcosine salts such as sodium lauroyl sarcosine; salts of higherfatty acid amido-sulfonic acids such as sodium N-myristoyl-N-methyltaurate, sodium coconut oil fatty acid methyl tauride and sodiumlaurylmethyl tauride; salts of phosphate esters such as sodium POE oleylether phosphate; salts of sulfosuccinic acids such as sodiumdi-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamidepolyoxyethylene sulfosuccinate and sodium lauryl polypropylene glycolsulfosuccinate; salts of alkylbenzenesulfonic acids such as sodiumlinear dodecylbenzenesulfonate, and the triethanolamine salt of lineardodecylbenzenesulfonate; salts of N-acylglutamic acids such asmonosodium N-lauroyl glutamate, disodium N-stearoyl glutamate andmonosodium N-myristoyl-L-glutamate; salts of higher fatty acid estersulfates such as the sodium salt of hardened coconut oil fatty acidglycerol sulfate; sulfated oils such as Turkey red oil; as well as POEalkyl ether carboxylic acids, POE alkylaryl ether carboxylates, salts ofα-olefin sulfonic acids, salts of higher fatty acid ester sulfonicacids, salts of secondary alcohol sulfate esters, salts of higher fattyacid alkylol amide sulfate esters, sodium lauroyl monoethanolamidesuccinate, the di-triethanolamine salt of N-palmitoylaspartic acid,sodium caseinate; POE stearyl ether phosphoric acid and the like.

Further, specific examples of the cationic surfactants includealkyltrimethylammonium salts such as stearyltrimethylammonium chlorideand lauryltrimethylammonium chloride, dialkyldimethylammonium salts suchas distearyldimethylammonium chloride, alkylpyridinium salts such aspoly(N,N′-dimethyl-3,5-methylenepiperidinium) chloride andcetylpyridinium chloride, alkyl quaternary ammonium salts,alkyldimethylbenzylammonium salts, alkylisoquinolinium salts,dialkylmorphonium salts, POE alkylamines, alkylamine salts, polyaminefatty acid derivatives, amyl alcohol fatty acid derivatives,benzalkonium chloride, benzethonium chloride, and organically modifiedclay minerals such as organically modified montmorillonite.

Specific examples of the amphoteric surfactants includeimidazoline-based amphoteric surfactants such as sodium2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline and disodium2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy; and betaine-basedsurfactants such as2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine,lauryldimethylaminoacetic acid betaine, alkyl betaines, amide betainesand sulfobetaines.

Specific examples of the lipophilic nonionic surfactants includesorbitan fatty acid esters such as sorbitan monooleate, sorbitanmonoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitanmonostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerolsorbitan penta-2-ethylhexylate and diglycerol sorbitantetra-2-ethylhexylate; glycerol fatty acid esters such as glycerolmono-cottonseed oil fatty acid ester, glycerol monoerucate, glycerolsesquioleate, glycerol monostearate, glycerol α,α′-oleate pyroglutamate,glycerol monostearate and glycerol monooleate; polyglycerol fatty acidesters such as diglyceryl monoisostearate, diglyceryl diisostearate,diglyceryl condensed ricinoleate and tetraglyceryl condensedricinoleate; propylene glycol fatty acid esters such as propylene glycolmonostearate; hardened castor oil derivatives; glycerol alkyl ethers andthe like.

Further, specific examples of the hydrophilic nonionic surfactantsinclude POE sorbitan fatty acid esters such as POE sorbitan monooleate,POE sorbitan monostearate, and POE sorbitan tetraoleate; POE sorbitolfatty acid esters such as POE sorbitol monolaurate, POE sorbitolmonooleate, POE sorbitol pentaoleate and POE sorbitol monostearate; POEglycerol fatty acid esters such as POE glycerol monostearate, POEglycerol monoisostearate and POE glycerol triisostearate; POE fatty acidesters such as POE monooleate, POE distearate, POE dioleate and ethyleneglycol distearate; POE alkyl ethers such as POE lauryl ether, POE oleylether, POE stearyl ether, POE behenyl ether, POE 2-octyldodecyl etherand POE cholestanol ether; Pluronics such as Pluronic; POE-POP alkylethers such as POE-POP cetyl ether, POE-POP 2-decyltetradecyl ether,POE-POP monobutyl ether, POE-POP hydrogenated lanolin ether and POE-POPglycerol ether; tetra-POE-tetra-POP ethylenediamine condensates such asTetronic; POE castor oil/hardened castor oil derivatives such as POEcastor oil, POE hardened castor oil, POE hardened castor oilmonoisostearate, POE hardened castor oil triisostearate, POE hardenedcastor oil monopyroglutamate monoisostearate diester and POE hardenedcastor oil maleate; POE beeswax lanolin derivatives such as POE sorbitolbeeswax; alkanolamides such as coconut oil fatty acid diethanolamide,lauric acid monoethanolamide and fatty acid isopropanolamides; POEpropylene glycol fatty acid esters, POE alkylamines, POE fatty acidamides, sucrose fatty acid esters, POE nonylphenyl formaldehydecondensates, alkylethoxydimethylamine oxides, trioleyl phosphoric acid;polyglycerol fatty acid esters such as polyglyceryl monolaurate,polyglyceryl monostearate, polyglyceryl monooleate, polyglyceryldistearate and polyglyceryl dioleate; and modified silicones such ascopolymers of methylpolysiloxane, cetylmethylpolysiloxane andpoly(oxyethylene-oxypropylene)methylpolysiloxane.

Specific examples of the naturally occurring surfactants includelecithins such as soybean phospholipid, hydrogenated soybeanphospholipid, egg yolk phospholipid and hydrogenated egg yolkphospholipid, soybean saponin and the like.

Examples of the powders, pigments and dyes include inorganic powderssuch as talc, kaolin, mica, sericite, muscovite, phlogopite, syntheticmica, lepidolite, biotite, lithia mica, vermiculite, magnesiumcarbonate, calcium carbonate, aluminum silicate, barium silicate,calcium silicate, magnesium silicate, strontium silicate, metal salts oftungstic acid, magnesium, silica, zeolite, barium sulfate, calcinedcalcium sulfate (calcined gypsum), calcium phosphate, fluorapatite,hydroxyapatite, ceramic powder, metallic soaps (such as zinc myristate,calcium palmitate and aluminum stearate) and boron nitride; organicpowders such as polyamide resin powder (nylon powder), polyethylenepowder, poly(methyl methacrylate) powder, polystyrene powder, powder ofa copolymer resin of styrene and acrylic acid, benzoguanamine resinpowder, poly(ethylene tetrafluoride) powder and cellulose powder;inorganic white pigments such as titanium dioxide and zinc oxide;inorganic red pigments such as iron oxide (red iron oxide) and irontitanate; inorganic brown pigments such as iron oxide; inorganic yellowpigments such as yellow iron oxide and yellow ocher; inorganic blackpigments such as black iron oxide, carbon black and titanium oxide of alow degree of oxidation; inorganic purple pigments such as mango violetand cobalt violet; inorganic green pigments such as chromium oxide,chromium hydroxide and cobalt titanate; inorganic blue pigments such asultramarine blue and Prussian blue; pearl pigments such as titaniumoxide-coated mica, titanium oxide-coated bismuth oxychloride, titaniumoxide-coated talc, colored titanium oxide-coated mica, bismuthoxychloride and fish scale guanine; metal powder pigments such asaluminum powder and copper powder; organic pigments such as Red No. 201,Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No.228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, YellowNo. 401 and Blue No. 404; organic pigments including zirconium lakes,barium lakes or aluminum lakes or the like, such as Red No. 3, Red No.104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505,Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No.203, Green No. 3 and Blue No. 1; and natural colorants such aschlorophyll, β-carotene and the like.

Examples of the alcohols include lower alcohols and polyhydric alcohols.

Specific examples of the lower alcohols include methanol, ethanol,propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like.

Further, specific examples of the polyhydric alcohols include dihydricalcohols such as ethylene glycol, propylene glycol, trimethylene glycol,1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol,2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexyleneglycol and octylene glycol; trihydric alcohols such as glycerol,trimethylolpropane and 1,2,6-hexanetriol; tetrahydric alcohols such aspentaerythritol; pentahydric alcohols such as xylitol; hexahydricalcohols such as sorbitol and mannitol; polymers of polyhydric alcoholssuch as diethylene glycol, dipropylene glycol, triethylene glycol,polypropylene glycol, tetraethylene glycol, diglycerol, polyethyleneglycol, triglycerol, tetraglycerol and polyglycerol; alkyl ethers ofdihydric alcohols such as ethylene glycol monomethyl ether, ethyleneglycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycolmonophenyl ether, ethylene glycol monohexyl ether, ethylene glycolmono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycolbenzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethylether, ethylene glycol diethyl ether and ethylene glycol dibutyl ether;alkyl ethers of dihydric alcohols such as diethylene glycol monomethylether, diethylene glycol monoethyl ether, diethylene glycol monobutylether, diethylene glycol dimethyl ether, diethylene glycol diethylether, diethylene glycol butyl ether, diethylene glycol methyl ethylether, triethylene glycol monomethyl ether, triethylene glycol monoethylether, propylene glycol monomethyl ether, propylene glycol monoethylether, propylene glycol monobutyl ether, propylene glycol isopropylether, dipropylene glycol methyl ether, dipropylene glycol ethyl etherand dipropylene glycol butyl ether; ether esters of dihydric alcoholssuch as ethylene glycol monomethyl ether acetate, ethylene glycolmonoethyl ether acetate, ethylene glycol monobutyl ether acetate,ethylene glycol monophenyl ether acetate, ethylene glycol diadipate,ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate,diethylene glycol monobutyl ether acetate, propylene glycol monomethylether acetate, propylene glycol monoethyl ether acetate, propyleneglycol monopropyl ether acetate and propylene glycol monophenyl etheracetate; glycerol monoalkyl ethers such as chimyl-alcohol, selachylalcohol and batyl alcohol; sugar alcohols such as sorbitol, maltitol,maltotriose, mannitol, sucrose, erythritol, glucose, fructose, sugarsobtained by amylolysis, maltose, xylitose and alcohols obtained byreducing sugars obtained by amylolysis; as well as glysolid,tetrahydrofurfuryl alcohol, POE tetrahydrofurfuryl alcohol, POP butylether, POP-POE butyl ether, tripolyoxypropylene glycerol ether, POPglycerol ether, POP glycerol ether phosphoric acid, POP-POEpentaerythritol ether and the like.

The other components added may be either a single component or a mixtureof two or more components. In the case of a mixture of two or morecomponents, the combination used and the ratio between the compounds maybe selected appropriately in accordance with the intended purpose.

Examples of product formulations for the cosmetic transparent gelpreparation of the present invention include makeup cosmetics such aslipstick, lip gloss, lip cream and eye shadow, and hair cosmetics suchas hair stick and pomade. Of these, in terms of achieving particularlysuperior effects, the present invention is particularly suited tostick-type transparent solid cosmetic preparations.

The cosmetic transparent gel preparation of the present invention can beproduced using conventional methods. In a sample method, theesterification reaction product obtained by reacting glycerol, thedibasic acid of 18 to 28 carbon atoms and the fatty acid of 8 to 28carbon atoms (excluding dibasic acids) is blended with the12-hydroxystearic acid, the oil component and any other components thatare added according to need, the resulting mixture is then heated andmelted to achieve a homogenous mixture, and the mixture is then cooledand molded into the desired form.

During blending, the gelling agent of the present invention, namely themixture of the 12-hydroxystearic acid and the esterification reactionproduct of the present invention, is preferably added to the oilcomponent.

There are no particular limitations on the temperature during theheating and melting step, and the temperature may be adjusted dependingon the blend components, but normally a temperature of 90° C. or loweris sufficient, and a temperature of approximately 75 to 85° C. ispreferred. In the present invention, because of the combination ofcomponents used, even though heating is not performed at a hightemperature of 95° C. or higher, each of the blend components is able tobe melted, and therefore deterioration of the oil component inparticular can be prevented, and a high-quality cosmetic preparation canbe produced.

The hardness of the cosmetic transparent gel preparation of the presentinvention can be adjusted by altering the blend amount of the gellingagent. The hardness may be adjusted appropriately in accordance withfactors such as the intended application of the target cosmetictransparent gel preparation. For example, in the case where, asdescribed above, a mixture of 12-hydroxystearic acid and theesterification reaction product of the present invention is used as thegelling agent, then usually the blend amount of this mixture ispreferably within a range from 5 to 30% by mass, and more preferablyfrom 7 to 25% by mass, based on the total mass of all the blendedcomponents.

Specifically, using the “rupture strength” described in the followingexamples as an example, if the blend amount of the above mixture is 10%by mass or greater, then a product having a rupture strength of at least140 is obtained, if the blend amount of the mixture is 12% by mass orgreater, then the rupture strength of the product is at least 175, ifthe blend amount of the mixture is 15% by mass or greater, then therupture strength of the product is at least 200, and if the blend amountof the mixture is 20% by mass or greater, then the rupture strength ofthe product is at least 300. Further, even following storage of thecosmetic transparent gel preparation of the present invention atapproximately room temperature for approximately one month, the highlevel of hardness can be maintained.

The cosmetic transparent gel preparation of the present inventionaddresses the usability and transparency problems associated withconventional transparent cosmetic preparations such as poorspreadability upon application, an unsatisfactory finish, anddeterioration in the transparency over time.

Moreover, the cosmetic transparent gel preparation of the presentinvention has a high level of hardness and excellent quality for acosmetic gel preparation.

EXAMPLES

The present invention is described in more detail below based on aseries of specific examples. However, the present invention is in no waylimited by these examples.

Unless stated otherwise, the blend amounts the various components listedbelow are “% by mass”.

Examples 1 to 12, Comparative Examples 1 to 8

<Production of Cosmetic Transparent Gel Preparations>

Using the blend ratios shown in Tables 1 to 5, a series of cosmetictransparent gel preparations were prepared by adding a gelling agent (amixture of 12-hydroxystearic acid and an esterification reaction productof the present invention) to an oil component, heating the resultingmixture at 80° C. to melt the components and generate a homogenousmixture, pouring the resulting mixture into a mold, and then performingmolding into a cylindrical shape with a diameter of 12 mm by cooling to0° C. However, in the case of comparative example 2 only, the cosmetictransparent gel preparation was obtained in a similar manner to thatdescribed above, with the exception that the oil component and dextrinfatty acid ester were first melted by heating to 95° C., and the12-hydroxystearic acid was then added. In the tables, “-” means eitherno addition or not applicable.

In Tables 1 to 5, the raw materials denoted *1 to *7 refer to thecommercially available products listed below.

-   *1: product name: NOMCORT SG, manufactured by Nisshin Oillio Group-   *2: product name: NOMCORT HK-G, manufactured by Nisshin Oillio Group-   *3: product name: RHEOPEARL KL, manufactured by Chiba Flour Milling    Co., Ltd.-   *4: product name: COSMOL 222 (hydroxyl value: 80), manufactured by    Nisshin Oillio Group-   *5: product name: KF56 (hydroxyl value: 0), manufactured by    Shin-Etsu Chemical Co., Ltd.-   *6: product name: COSMOL 43 (hydroxyl value: 47), manufactured by    Nisshin Oillio Group-   *7: product name: SALACOS 5418 (hydroxyl value: 1), manufactured by    Nisshin Oillio Group

The raw materials of *4 to *7 are all liquids at normal temperature.

Further, “glyceryl (behenate/isostearate/eicosanedioate)” represents “anesterification reaction product obtained by reacting glycerol, behenicacid, isostearic acid and eicosanedioic acid”, and “glyceryl(behenate/eicosanedioate)” represents “an esterification reactionproduct obtained by reacting glycerol, behenic acid and eicosanedioicacid”.

<Evaluation of Quality of Cosmetic Transparent Gel Preparations>

Each of the obtained cosmetic transparent gel preparations was storedfor one month at 25° C., and then evaluated for rupture strength,hardness, transparency, and the state obtained following application.The results of the evaluations are shown in Tables 1 to 5. Evaluationsof the various properties were performed in accordance with the methodsand evaluation criteria described below.

(Rupture Strength, Hardness)

The cosmetic transparent gel preparation was left to stand for one hourat 20° C., and then using a rheometer (manufactured by Fudoh Kogyo Co.,Ltd.), a plunger with a diameter of 3 mm was used to press the sample ata mounting rate of 60 mm/minute, and the maximum stress value wasmeasured and recorded as the rupture strength. The criterion forevaluating the hardness is described below. Namely, evaluation wasconducted on the basis of the following relational formula, wherein thestandard comparative example was deemed to be comparative example 1 forexamples 1 to 8, comparative example 5 for examples 9-11, comparativeexample 6 for example 12, and comparative example 8 for example 13respectively. In the following formula, X represents the hardness of theexample, or a comparative example other than the standard comparativeexample, and Y represents the hardness of the standard comparativeexample.

A: the rupture strength is higher than that of the standard comparativeexample (1.2<X/Y)

B: the rupture strength is similar to that of the standard comparativeexample (0.8≦X/Y≦1.2)

C: the rupture strength is lower than that of the standard comparativeexample (0.5≦X/Y<0.8)

D: the rupture strength is much lower than that of the standardcomparative example (X/Y<0.5)

(Transparency)

The transparency was evaluated based on the ease of readability of ahiragana character “a” (size of character: 1 cm square) positioned 0.5cm behind a glass bottle containing the sample, when viewed through thebottle. The evaluation criteria for the transparency are listed below.

A: the character can be read clearly

B: the character appears clouded, but can be read

C: the existence of the character is apparent, but the character isunreadable

D: the existence of the character cannot be confirmed

(Usability)

The sample was poured into a mold to prepare a stick-type cosmeticpreparation, and following application of the preparation to the lips,the degree of disintegration at the application surface of the stick wasevaluated. The evaluation criteria are listed below.

A: no surface disintegration

B: almost no surface disintegration

C: slight surface disintegration

D: very noticeable surface disintegration

TABLE 1 Gelling agent: 15% by mass, standard comparative example:comparative example 1 Example 1 2 3 4 5 6 7 8 Gelling 12-hydroxystearicacid 14 10 10 10 10 10 10 10 agent Glyceryl (behenate/isostearate/  1  5 5  5 —  5  5  5 eicosanedioate) (*1) Glyceryl (behenate/eicosanedioate)(*2) — — — —  5 — — — Dextrin palmitate (*3) — — — — — — — —12-hydroxystearic acid: esterification 14:1 2:1 2:1 2:1 2:1 2:1 2:1 2:1reaction product (mass ratio) Oil Diisostearyl malate (*4) 51 51 57 — 5143 — 23 component Methylphenylpolysiloxane (*5) 34 34 28 29 34 42 — 22Diglyceryl triisostearate (*6) — — — 56 — — — — Pentaerythrityltetraisostearate (*7) — — — — — — 85 40 Evaluation Hardness B B B B A BB B results Rupture strength 239  245  212  217  465  248  244  248 Transparency B A A A B A B B Usability B A A A A A B A

TABLE 2 Gelling agent: 15% by mass, standard comparative example:comparative example 1 Comparative example 1 2 3 4 Gelling agent12-hydroxystearic acid 15 10 — — Glyceryl (behenate/isostearate/ — — 15— eicosanedioate) (*1) Glyceryl (behenate/eicosanedioate) (*2) — — — 15Dextrin palmitate (*3) — 5 — — 12-hydroxystearic acid:esterification — —— — reaction product (mass ratio) Oil component Diisostearyl malate (*4)51 51 51 51 Methylphenylpolysiloxane (*5) 34 34 34 34 Diglyceryltriisostearate (*6) — — — — Pentaerythrityl tetraisostearate (*7) — — —— Evaluation results Hardness B D D B Rupture strength 233 could not be71 233 molded Transparency C A D D Usability D D D D

TABLE 3 Gelling agent: 20% by mass, standard comparative example:comparative example 5 Comparative Example example 9 10 11 5 Gellingagent 12-hydroxystearic acid 18 15 10 20 Glyceryl (behenate/isostearate/2 5 10 — eicosanedioate) (*1) Glyceryl (behenate/eicosanedioate) (*2) —— — — Dextrin palmitate (*3) — — — — 12-hydroxystearicacid:esterification 9:1 3:1 1:1 — reaction product (mass ratio) Oilcomponent Diisostearyl malate (*4) 48 48 48 48 Methylphenylpolysiloxane(*5) 32 32 32 32 Diglyceryl triisostearate (*6) — — — — Pentaerythrityltetraisostearate (*7) — — — — Evaluation results Hardness A A A BRupture strength 352 371 341 232 Transparency B B B C Usability A A A D

TABLE 4 Gelling agent: 12% by mass, standard comparative example:comparative example 6 Comparative Example example 12 6 Gelling12-hydroxystearic acid 10 12 agent Glyceryl (behenate/isostearate/ 2 —eicosanedioate) (*1) Glyceryl (behenate/ — — eicosanedioate) (*2)Dextrin palmitate (*3) — — 12-hydroxystearic acid: 5:1 — esterificationreaction product (mass ratio) Oil Diisostearyl malate (*4) 53 53component Methylphenylpolysiloxane (*5) 35 35 Diglyceryl triisostearate(*6) — — Pentaerythrityl — — tetraisostearate (*7) Evaluation Hardness BD results Rupture strength 185 168 Transparency A B Usability A D

TABLE 5 Gelling agent: 10% by mass, standard comparative example:comparative example 8 Example Comparative example 13 7 8 Gelling agent12-hydroxystearic acid 8 — 10 Glyceryl (behenate/isostearate/ 2 — —eicosanedioate) (*1) Glyceryl (behenate/eicosanedioate) (*2) — 10 —Dextrin palmitate (*3) — — — 12-hydroxystearic acid:esterification 4:1 —— reaction product (mass ratio) Oil component Diisostearyl malate (*4)54 54 54 Methylphenylpolysiloxane (*5) 36 36 36 Diglyceryltriisostearate (*6) — — — Pentaerythrityl tetraisostearate (*7) — — —Evaluation results Hardness B B B Rupture strength 147 127 130Transparency A D B Usability A D D

INDUSTRIAL APPLICABILITY

The present invention can be used in fields relating to all manner ofcosmetic preparations.

The invention claimed is:
 1. A cosmetic transparent gel preparation,comprising one or more esterification reaction products selected from anesterification reaction product obtained by reacting glycerol with,behenic acid, isostearic acid, and eicosanedioic acid or anesterification reaction product obtained by reacting glycerol with,behenic acid, and eicosanedioic acid, 12-hydroxystearic acid, and one ormore oil components selected from the group consisting of diisostearylmalate, diglyceryl triisostearate, pentaerythrityl tetraisostearate, andmethylphenylpolysiloxane, wherein an amount of the 12-hydroxystearicacid is 4 to 20% by mass, an amount of the esterification reactionproducts is 1 to 15% by mass, and a mass ratio between the12-hydroxystearic acid and the esterification reaction products iswithin a range of from 14:1 to 9:1.
 2. A gelling agent, comprising oneor more esterification reaction products selected from an esterificationreaction product obtained by reacting glycerol with, behenic acid,isostearic acid, and eicosanedioic acid or an esterification reactionproduct obtained by reacting glycerol with, behenic acid, andeicosanedioic acid, and 12-hydroxystearic acid wherein a mass ratiobetween the 12-hydroxystearic acid and the esterification reactionproducts is within a range of from 14:1 to 9:1.
 3. A cosmetictransparent gel preparation, comprising the gelling agent according toclaim 2, and one or more oil components selected from the groupconsisting of diisostearyl malate, diglyceryl triisostearate,pentaerythrityl tetraisostearate, and methylphenylpolysiloxane.